In the Space Station Processing Facility, Node 2 undergoes testing. Known as the Traveled Work Systems Test (TWST), it executes open work that traveled with the Node 2 from Italy and simulates the on-orbit activation sequence. Node 2 was powered up Aug. 19 for the testing. The second of three Station connecting modules, the Node 2 attaches to the end of the U.S. Lab and provides attach locations for several other elements. Node 2 is scheduled to launch on mission STS-120, assembly flight 10A to the International Space Station.